Rotary engine.



E. KROGEL.

ROTARY ENGINE.

APPLIOATION IILBD APIL I, 1910.

3 8HEETS-BHBET 1.

WITNESSES INVENTOR 57 112052752 0 9:9! f/id/mz/z fiw .74 ATTORNEY COLUMBIA PLANOURAPH (LO-.WASH

Patented July 8, 1913.

E. KROGEL.

' ROTARY ENGINE.

APPLICATION FILED APRA, 1910.

1,066,506, Patented July 8,1913.

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U Ely WITNESSES IN VENTOR 15 731652 dfm yd om @M I I I ATTORNEY combination of elements hereinafter ERNEST KROGEL, OF PHILADELPHIA, PENNSYLVANIA.

ROTARY ENGINE.

Specification of Letters Patent.

Patented July 8, 1913.

Application filed April 4, 1910. Serial No. 553,410.

To all whom it may concern lie it known that I, EnNns'r Knoonn, a subject of the Emperor of Germany, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a certain new and useful Improvement in Rotary Engines, of which the following is a specification.

My invention relates to a new and useful improvement in rotary engines, and has for its object to so construct a device of this character as to enable the driving fluid to act upon the reciprocating piston blades by pressure and expansion, thus producing an engine of this class of increased etliciency and power.

With these ends in view, this invention consists in the details of construction and set forth and then specifically designated by the claim.

In order that those skilled in the art to which this invention appertains may understand how to make and use the same. I will describe its construction in detail, referring by letter to the accompanying drawing forming a part of this specification, in which- Figure 1 is a vertical sectional view of my improved verticalengine. Fig. 2, a side elevation of the rotary piston. Fig. 3, a section at the line w-w of Fig. 1, showing two cylinders placed side by side and the shafts joined, the body of the piston being removed from one of the cylinders. Fig. 4, a similar view to Fig. 3 showing the cylinders mounted together, having a partition between them, the pistons being removed, and Fig. 5, a perspective view of the reciprocating blade, portions thereof being broken away to more clearly show the construction.

In carrying out my invention as here embodied, A represents the engine cylinder which may be mounted upon any suitable base. To both ends of the cylinder are so cured the engine heads 13, each of which fits within the cylinder and has a flange (1 formed therewith adapted to overlap the walls of the cylinder so that the periphery of the head coincides with the periphery of the cylinder. Each head is also provided with a bearing D in which is journaled the shaft E formed with the piston F, said piston having oppositely disposed cut away portions Gr, one end of which has an inclined portion ll' leading therefrom to the larger circun'iference of said piston. The piston when mounted has its ends resting within the recesses l: formed in the heads 13 and are provided with packing rings J to prevent the escape of the driving fluid, while the shafts I) are packed with the ordinary stuffing boxes K.

The piston F is provided with a slot L which passes entirely through the same and of a length approximately equal to the length of the cylinder from head to head, and this slot is connected with the periphery of the piston, by a parallel, passage way M entering the slot l; some distance from the periphery of the piston. In this slot L is mounted the reciprocating wing N, which is operated by the cam surface 0 and guided by the cam surface I, these nuns being formed upon the cam block Q, mounted within the cylinder and secured thereto by the bolts 1% or their equivalent.

To prevent the reciprocating wing from jamming against the inner face of the cylindcr when operated by the cam O, I mount pins (n upon opposite faces of the wing in proximity to its ends. These pins register with the slot 7) formed in the piston F so that when the reciprocating wing has been forced one way sutliciently the pin will rest against the shoulder (1 formed by the innermost end of the slots. The reciprocating wing is provided with oppositely disposed slots S along the edges thereof and in these slots are mounted the packing blades T which are normally held outward by steam. The steam passes through the passage way M in the piston, through the openings U in the rcci n'ocating wing, said openings being formed at the rear of the blades T, thus normally holding said blades outward or in engagement with the cam surfaces and the inner surface of the cylinder. In each end of the reciprocating wing N is formed a slot V having another slot crossing the slot V at right angles thereto. In each of said slots V are mounted two packing blades Y which extend from the edges of the wing to the slot \V. These blades are normally held outward in engagement with the inner surface of the engine heads by a suitable resilient means such as a coil spring Z. In the slots V are mounted packing members A which are normally held outward by coil springs B in engagement with the end walls of the slot L which will prevent the escape of the steam between the walls of the slot and the reciprocating wing at the ends of the piston.

I/Vithin the piston at each side of the slot L is placed a packing strip C which is normally held in engagement with the faces of the reciprocating wing by the coil springs D. These packing strips prevent the driving fluid escaping between the walls of the slot L and the faces of the reciprocating Wing. The cylinder is provided with an inlet E and an outlet F, said outlet having an enlarged mouth G so that the exhaust product is emitted gradually. From the inlet leads the passage cl which provides an enlarged passage way with the cut away portion G. Furthermore, as the solid portion of the piston passes over the mouth of the inlet the fluid may still continue to flow through the passage (Z to operate against the wing just passed by the inlet. Between the inlet and the exhaust are mounted two packings H, having beveled edges I, said packing members being normally held in engagement with the piston by the spring J.

The operation of the device is as follows :-The steam entering the inlet passes through the passages (Z and G against the wing, forcing the latter about the pivot or mounting of the piston, and as the wing passes down the surface P the steam is still provided with a passage whereby to act against the wing until the solid portion of the piston shuts ofi' communication with the inlet through the passage (Z. As the edge of the reciprocating wing reaches the cam surface 0 this end thereof is pressed inward and the opposite end forced outward along the cam surface P, the packing blades keeping the steam' always upon one side of the wing.

In the revolution of the piston F the inclined portion II will contact with the beveled portions J of the packing members H, lifting them so that the piston may continue to revolve. One edge of the wing will ride down the surface I? while the opposite edge will ride up the surface 0. The operating fluid acting against the wing and the cam surface I? forces said wing around to the exhaust port. During this operation, the side of the wing received within the piston passes the intake port, whereupon the incoming operating fluid is adapted to act upon said side of the wing. Then the edge of the reciprocating blade reaches the mouth G of the exhaust F, the steam will gradually pass from the cylinder.

In Fig. 3 I have shown two of the engines side by side and their shafts joined together by a coupling K, and when so coupled the reciprocating wing of one is set at right angles to the wing of the other, as shown by dotted lines, in Fig. 1, thus giving an even action.

In Fig. 4 I have shown two cylinders joined together but having their chambers separated by a partition L.

Of course I do not wish to be limited to the exact details of construction here shown, as these may be varied within the limits of the appended claim without departing from the spirit of my invention.

Having thus fully described my invention, what I claim as new and useful, is

In an engine of the character described,

the combination of a cylinder having an inlet and outlet, cylinder heads having recesses therein mounted upon both ends of the cylinder, a cam block provided with an operating cam and a guide cam, means for securing said cam block within the cylinder, packing members having beveled edges mounted between the inlet and exhaust, springs for normally holding said packing members outward, a rotary piston provided with a slot therethrough and having openings parallel therewith, said piston having oppositely disposed reduced circumference portions with inclined portions upon which ride the packing members, shafts integral with the piston, penetrating the engine heads. a reciprocating wing mounted within the slot in the piston, said reciprocating wing having grooves formed in its edges, packing blades mounted in said grooves, means for normally holding said packing blades outward, packing strips mounted in the cylinder on both sides of the slot therein, and resilient means for normally holding said packing strips in engagement with the reciprocating wing.

In testimony whereof, I have hereunto affixed my signature in the presence of two subscribing witnesses.

ERNEST KROGEL.

Witnesses J osnrn J. RosENBLU'rrr, MAX RosnNBLU'rH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

